Draw the structure of a typical fat consisting of three fatty acids and one glycerol molecule. This molecule is called a triglyceride. Explain why the structure of phospholipids are ideal for the structure and function of the cell membrane. Explain why people tend to store more fat with age. Define a saturated fatty acid. Provide one example of a saturated fatty acid. Define an unsaturated fatty acid. Provide one example of an unsaturated fatty acid. Define a polyunsaturated fatty acid. Draw, label, and describe the structure of a phospholipid. Include the head region, the tail region, hydrophobic region, and hydrophilic regions Draw the structure of a typical steroid. Describe the function of steroids.